题目
Number x is randomly selected from the integers 42 to 92 inclusive
Quantity A
The probability that x is odd
Quantity B
The probability that x is even
选项
C.The two quantities are equal.
D.The relationship cannot be determined from the information given.
解析
总数 = (92-42)+1 = 51
奇数总数 = 51-((92-42)+1)/2
奇数总数 = 51-26 = 25
偶数总数 = 51-25 = 26
A项
P(x为奇数) = 25/51
B项
P(x为偶数) = 26/51
B项更大